Paper Title:
Short Term Oxidation of a Ti-46Al-8Nb Alloy at 700°C in Air
  Abstract

Thermogravimetry was used to study the oxidation behaviour of a lamellar Ti46Al8Nb alloy during holding at 700°C in synthetic air. A parabolic plot of the oxidation kinetics shows three different regimes over the total duration (50 h) of the tests corresponding to decreasing values of the parabolic rate constant. The oxide scale was characterized by glancing-angle X-Ray diffraction and transmission electron microscopy. The scale was found to be bi-layered with an outer part that consists of amorphous aluminium rich oxide whilst the inner layer is made of very small cristalites of titania distributed in the same amorphous oxide.

  Info
Periodical
Materials Science Forum (Volumes 636-637)
Edited by
Luís Guerra ROSA and Fernanda MARGARIDO
Pages
485-490
DOI
10.4028/www.scientific.net/MSF.636-637.485
Citation
P. E. T. Ngnekou, M. C. Lafont, F. Senocq, J. Lacaze, B. Viguier, "Short Term Oxidation of a Ti-46Al-8Nb Alloy at 700°C in Air", Materials Science Forum, Vols. 636-637, pp. 485-490, 2010
Online since
January 2010
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Price
$32.00
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